Percent Yield Worksheet 2

Percent Yield Calculations1) Balance this equation and state which of the six types of reaction is takingplace:____ Mg + ____ HNO 3 ____ Mg(NO 3 ) 2 + ____ H 2Type of reaction: __________________________2) If I start this reaction with 40 grams of magnesium and an excess of nitricacid, how many grams of hydrogen gas will I produce?3) If 1.7 grams of hydrogen is actually produced, what was my percent yieldof hydrogen?4) Balance this equation and state what type of reaction is taking place:____ NaHCO 3 ____ NaOH + ____ CO 2Type of reaction: __________________________5) If 25 grams of carbon dioxide gas is produced in this reaction, how manygrams of sodium hydroxide should be produced?6) If 50 grams of sodium hydroxide are actually produced, what was mypercent yield?

Percent Yield Calculation Answers1) Balance this equation and state which of the six types of reaction is takingplace:1 Mg + 2 HNO 3 1 Mg(NO 3 ) 2 + 1 H 2Type of reaction: single displacement2) If I start this reaction with 40 grams of magnesium and an excess of nitricacid, how many grams of hydrogen gas will I produce?• 3.3 grams (when Mg atomic mass = 24.3 grams)3) If 1.7 grams of hydrogen is actually produced, what was my percent yieldof hydrogen?• 52%4) Balance this equation and state what type of reaction is taking place:1 NaHCO 3 1 NaOH + 1 CO 2Type of reaction: decomposition5) If 25 grams of carbon dioxide gas is produced in this reaction, how manygrams of sodium hydroxide should be produced?22.7 grams NaOH6) If 50 grams of sodium hydroxide are actually produced, what was mypercent yield?50/22.7 x 100% = 220%Hopefully, you understand that this is not a reasonable answer tothis question and indicates that something very wrong happenedduring this reaction.